Why are the grains undercooked when the grains are added to the rice in the Xiaomi Multifunctional IH Rice Cooker?

If the grains are undercooked in the mixture of rice and grains in the Xiaomi Multifunctional IH Rice Cooker, please refer to the following details:
1. When cooking grains and rice together, due to the different water absorption rates and cooking times of different ingredients, the rice will be cooked but the grains will still be hard. This is an operational issue;
2. The Xiaomi Multifunctional IH Rice Cooker's Rice and Quick rice modes are only suitable for cooking white rice. Some Xiaomi Rice Cookers support Internet connection and can use online recipes for cooking. If the rice cooker does not have a grain rice function, it is not recommended to cook grain rice.